Install Poetry with pipx and unset POETRY_HOME

1d8eee0
884d475

Poetry has a new install script, install-poetry.py, which alters the
requirements for adding Poetry to `$PATH`. `$HOME/.local/bin` was
already on `$PATH` for pipx, so it seemed like a good option. Commits
1d8eee0 and 884d475 updated `.zshrc` and `script/strap-after-setup` for
install-poetry.py and `POETRY_HOME=$HOME/.local`.

This made sense initially, because Poetry installs its binaries into
`$POETRY_HOME/bin`, and because Poetry doesn't have a `$POETRY_BIN_DIR`
configuration variable like pipx does (`$PIPX_BIN_DIR`). Unfortunately,
`POETRY_HOME=$HOME/.local` ended up being problematic, because Poetry
takes over `$POETRY_HOME`, and doesn't consider other applications
installed there. For example, if the get-poetry.py or install-poetry.py
scripts were used to install Poetry, they can also be used to uninstall
Poetry. Uninstalling with `python install-poetry.py --uninstall` or
`python get-poetry.py --uninstall` deletes the entire `$POETRY_HOME`
directory, which means it deletes `$HOME/.local`, causing problems for
other applications that use `$HOME/.local` (python-poetry/poetry#4625).

There have been many other issues with the Poetry custom install scripts
get-poetry.py and install-poetry.py (br3ndonland/inboard#36), so other
installation methods are be welcome.

Poetry is now available through Homebrew, but Homebrew installation is
not supported by the Poetry maintainers. Homebrew installation also
requires its own custom install script, which creates its own issues.
python-poetry/poetry#941
python-poetry/poetry#1765
Homebrew/homebrew-core#48883
Homebrew/homebrew-core#86776

pipx (https://pypa.github.io/pipx/) can also be used to install Poetry.
The pipx installation method is suggested in the Poetry docs and GitHub,
and pipx is already in use in this repo.
python-poetry/poetry#677
python-poetry/poetry#3360

This commit will remove `export POETRY_HOME=$HOME/.local` from `.zshrc`,
and will install Poetry with pipx.

.zshrc

@@ -53,7 +53,6 @@ fi
 TTY=$(tty)
 export GPG_TTY=$TTY
 export PATH=$HOME/.local/bin:$PATH
-export POETRY_HOME=$HOME/.local
 
 ### aliases
 alias python='python3'

script/strap-after-setup

@@ -3,7 +3,6 @@
 # Run by run_dotfile_scripts in bootstrap.sh
 # Scripts must be executable (chmod +x)
 echo "-> Running strap-after-setup. Some steps may require password entry."
-RAW="https://raw.githubusercontent.com"
 
 ### Configure macOS
 if [ "${MACOS:-0}" -gt 0 ] || [ "$(uname)" = "Darwin" ]; then
@@ -12,12 +11,9 @@ else
   echo "Not macOS. Skipping macos.sh."
 fi
 
-### Install user Python packages
-if command -v python3 &>/dev/null && ! command -v poetry &>/dev/null; then
-  export POETRY_HOME="$HOME/.local"
-  curl -fsS -o "$HOME/install-poetry.py" \
-    $RAW/python-poetry/poetry/HEAD/install-poetry.py
-  python3 "$HOME/install-poetry.py"
+### Install Poetry
+if command -v pipx &>/dev/null && ! command -v poetry &>/dev/null; then
+  pipx install poetry
 else
   echo "Skipping Poetry install."
 fi